package org.alanlau.netty_3;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;

import java.util.Date;

/**
 * @author alan
 * @version 1.0
 * @date 2021/3/3 23:34
 */
public class TimeServerHandler extends ChannelHandlerAdapter {
    private int counter;

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        String body = (String) msg;
        System.out.println("The time server receive order :　" + body + " ; the counter is: " + ++counter);
        String currentTime = "QUERY TIME ORDER".equalsIgnoreCase(body) ? new Date().toString() : "BAD ORDER";
        currentTime += System.getProperty("line.separator");
        ByteBuf resp = Unpooled.copiedBuffer(currentTime.getBytes());
        ctx.write(resp);
    }

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
        ctx.flush();
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        ctx.close();
    }
}
